Guides·November 4, 2026·6 min readMultipack Mismatch: The Pack-Size Trap That Fakes Your ROIThe most common cause of a profit number that is too good to be true.WholesaleProduct researchFBABuying timing
Guides·November 4, 2026·5 min readAmazon Variations: Why the Parent’s Sales Rank Misleads YouOn an Amazon variation listing, the children can share one sales rank, so a slow colour or size can look like a bestseller. A real example with 20-plus variations, how to estimate one child’s share of sales, and a checklist before you buy.Sales rankProduct researchInventory signals
Guides·October 30, 2026·9 min readWholesale Supplier List: How We Vet Every NameMost wholesale supplier lists are directory dumps with no evidence anyone checked them. A three-stage vetting checklist, how to verify a US wholesaler before you send a purchase order, the supplier types and when each fits, and the red flags that mean walk away.WholesaleProduct researchFBA
Guides·October 30, 2026·9 min readDays of Cover: The Formula FBA Sellers Should UseDays of cover tells you how many days of sales remain before a product’s stock runs out. The formula, a worked example, how to read it on a Keepa chart, and how to set a buy threshold from your own lead time.Days of CoverInventory signalsWholesale
Guides·October 29, 2026·11 min readAmazon FBA Profit Calculator: Get Every Fee Input RightAn Amazon FBA profit calculator only tells the truth if you feed it the right fee inputs. Fix the referral fee, FBA fulfillment fee, storage and inbound shipping, then read the margin against Days of Cover before you buy.FBAWholesaleProduct research
Guides·October 29, 2026·10 min readAmazon FBA Wholesale Sourcing: Pre-Purchase ChecklistMost sellers can get a distributor’s price list, but few have a repeatable way to decide which lines deserve money. Six decisions to make before any purchase order: vet the distributor, confirm ungating paperwork, run true per-unit margin math, set thresholds, check saturation, and know when to walk away.WholesaleFBAProduct research
Guides·October 29, 2026·11 min readAmazon Price History Tracker: Which One Fits Your WorkflowAn Amazon price history tracker shows whether a “sale” price is real before you buy inventory. How seller-grade tools differ from shopper extensions, how retailer trackers compare, and a 3-point baseline check for spotting fake discounts.FBAProduct researchPrice movement
Guides·October 9, 2026·5 min readHow to Check an Amazon Product for Free Before You Buy It or Ship It to FBABefore you buy stock or send it to an Amazon warehouse, run three free checks: can you sell it, does the margin survive real fees, and will it sell before your units sit in storage. Free tools for each step, plus a free forecast of how fast it sells and how long the stock already on Amazon will last.Free toolsFBAProduct research
